#登录文字标题 {
    font-size: 25px;
    margin-top: 10px;
    margin-left: 20px
}

.主体 {
    position: relative;
    width: 500px;
    height: 300px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 8px
}

.submit-btn {
    text-align: center;
    display: flex;
    justify-content: center
}

body {
    display: flex;
    justify-content: center;
    align-items: center
}

#codeImg {
    margin-left: -15px;
    width: 85px;
    height: 38px;
    cursor: pointer;
}

#立即注册 {
    cursor: pointer;
    text-decoration: blue;
    z-index: 99;
    position: absolute;
    right: 20px;
    top: 15px
}